Answer:
119.4cm^2
Step-by-step explanation:
Area of rectangle = 132cm^2
Area of circle = 12.6cm^2
Shaded region = 132cm^2 - 12.6cm^2 = 119.4cm^2
Answer: 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30
4: 4, 8, 12, 16, 20, 24, 28